Hey that's cool! Porting a program an excellent way to learn Axe given a background in BASIC.
By the way, would a >Hex command be useful? I already have a >Dec, >Char, and >Tok so in a similar way I can add a >Hex. There is even a really cool optimization for it that uses the daa instruction which is something I've never used but always wanted to.
Using daa seems so out of place in Axe... go ahead and add it